Exoplanet Name : |
78 Psc b |
Alternate Name : |
"HD 6680 b, HIP 5319 b" |
Status : |
Confirmed |
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
Mass (Mjup / Me): |
31.0000 |
(Mjup) |
9856.0780 |
(Mearth) |
Semi Major Axis / Orbital Distance Calculated |
18.6000 |
(AU) |
18.6000 |
(AU Est.) |
Eccentricity : |
0.4200 |
Orbital Period(Yrs) |
0.0000 |
Orbital Period(Observed/Estimated) |
0.00 |
(Days Obs.) |
24789.14 |
(Days Est.) |
Surface Gravity (G Earth) |
95.1834 |
Star Radiation at Atmospheric Boundary: |
11.1 |
(W/m2) |
Measured Temperature (K) |
0.0 |
(K) |
Blackbody T 0.1(K) |
81.5 |
(K) |
Blackbody T 0.3(K) |
76.6 |
(K) |
Blackbody T 0.7(K) |
62.0 |
(K) |
Tidally Locked Blackbody T 0.1(K) |
97.0 |
(K) |
Tidally Locked Blackbody T 0.3(K) |
91.1 |
(K) |
Size Class: |
Jupiter-size |
Mass Class: |
|
Detection Type : |
Imaging |
Mass Detection : |
Spectrum |
Radius Detection : |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
Habitability by Kopparapu: |
Not habitable |
Star Name : |
78 Psc |
Alternate Name : |
"HD 6680, HIP 5319" |
Star Distance(LY) : |
139.9 |
Stellar Radius(Rsun) : |
1.2 |
(Rsun Estimated) |
Stellar Mass(Msun) : |
1.4 |
(Msun Measured) |
0.0 |
(Msun Estimated) |
Star Age : |
0.0 |
(GY) |
Temperature : |
6700 |
(K) |
Spectral type : |
F5IV |
UV portion[%]: |
0.3 |
Visible portion[%]: |
1.5 |
IR portion[%]: |
98.2 |
Metalicity : |
0.0 |
Absolute Magnitude: |
2.8 |
Apparent Magnitude: |
6.0 |
Right Ascension(RA) |
17.0042 |
Declination (DEC) |
32.0122 |
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
Discovered by |
|
Discovery Paper - Authors |
|
Discovery Paper - Title |
|
Discovery Paper - Journal |
|
Discovery Paper - URL |
|
SIMBAD LINK |
|
Open Exoplanet Database Link |
|
![](78_Psc_b_CSun.png) |
![](78_Psc_b_CJup.png) |
![](78_Psc_b_CNep.png) |
![](78_Psc_b_CEar.png) |
/
78 Psc b
78 Psc b
78 Psc b is an exoplanet orbiting the star 78 Psc, located about 139.9 light-years (42.9 pc) away from Solar System. Its discovery was publicly announced on 2022.
The host star 78 Psc has apparent magnitude of 6.0, with absolute magnitude of 2.8. It is 1.4 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 6700 with its spectral types of F5IV
(Projected orbit of 78 Psc b around its host star 78 Psc)
![](78_Psc_b_Orb.png)
The Star 78 Psc 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 1.214 AU ( 181653567.2 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 1.678 AU ( 251092701.6 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 2.558 AU ( 382609710.5 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 3.764 AU ( 563026950.1 km)
Radiation at Planetary Boundary of 78 Psc b : 11.14 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 78 Psc)
![](78_Psc_b_OrbH.png)
Kopparapu Recent Venus for Star 78 Psc distance : 1.191 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star 78 Psc distance : 1.509 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 78 Psc distance : 1.457 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star 78 Psc distance : 1.596 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star 78 Psc distance : 2.618 AU
Kopparapu Outer Boundary for Early Mars for Star 78 Psc distance : 2.761 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star 78 Psc)
![](78_Psc_b_OrbK.png)
Original Kopparapu Recent Venus for Star 78 Psc distance : 1.217 AU
Original Kopparapu Runaway Greenhouse for Star 78 Psc distance : 1.546 AU
Original Kopparapu Moist Greenhouse for Star 78 Psc distance : 1.610 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 78 Psc distance : 2.666 AU
Original Kopparapu Outer Boundary for Early Mars for Star 78 Psc distance : 2.772 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star 78 Psc)
![](78_Psc_b_OrbKO.png)
(Position in Stellar Map of star 78 Psc and its Exoplanet 78 Psc b)
![](78_Psc_b_STZ0.png)
(Zoomed position in Stellar Map of star 78 Psc and its Exoplanet 78 Psc b (zoom level 3))
![](78_Psc_b_STZ3.png)
(Synthetic Spectrum of star 78 Psc*)
![](78_Psc_b_Spc.png)
*Yamashiki YA et al. 2019 ApJ 881 114
MUSCLES Paper I - France et al. 2016 ApJ 820 89
MUSCLES Paper II- Youngblood et al. 2016 ApJ 824 101
MUSCLES Paper III- Loyd et al. 2016 ApJ 824 102